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the oxidation number of any uncombined element is...


the oxidation number of a monatomic ion equals...

the charge on the ion

the more electronegative element in a binary compound is assigned the number equal to the charge it would have...

if it were an ion

the oxidation of fluorine in a compound is always...

negative one

oxygen has an oxidation number of negative two unless it is combined with F, when it is...or it is in a peroxide, when it is...

plus two, negative one

the oxidation of hydrogen in most of its compounds is plus one unless it combined with a metal in which case it is...

negative one

in compounds, the element of groups 1 and 2 as well as aluminum have oxidation number of...

plus one, plus two, and plus three respectively

the sum of the oxidation numbers of all atoms in a neutral compound is...


the sum of the oxidation number of all atoms in a polyatomic ion equals...

the charge of the ion

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